Abstract:This paper introduces DOA (Direction Of Arrival) detection system of jamming waves used for radio surveillance of 900MHz, featuring its function of frequency spectrum analysis to distinguish CDMA (Code Division Multiple Access) and jamming waves. There exist many jamming waves arising from illegal (nonlicensed) repeating antennas or wireless cameras that seriously interfere to CDMA signals especially in urban districts. It makes lower communication quality suchlike crossed communication in voice and lower thro… Show more
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